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Physical & Chemical properties

Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
from 1999-08-23 to 1999-12-21
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7950 (Vapor Pressure)
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
no
Qualifier:
according to guideline
Guideline:
other: 94/37/EC A. I amending 91/414/EEC
Version / remarks:
1994
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
gas saturation method
Key result
Test no.:
#1
Temp.:
20 °C
Vapour pressure:
0 Pa

The vapour pressure of the test item determined at 10, 20 and 30 °C

Average temperature (°C)

Experimental vapour pressure (Pa)

Mean vapour pressure (Pa)

9.5

< 1.2 x 10-5

< 9.4 x 10-6

< 8.1 x 10-6

< 8.1 x 10-6

19.6

< 8.6 x 10-6

< 8.8 x 10-6

< 8.4 x 10-6

< 9.3 x 10-6

29.8

< 8.9 x 10-6

< 9.5 x 10-6

< 9.7 x 10-6

< 1.0 x 10-6
Conclusions:
The vapour pressure of the test item was found to be and 9 x 10-6 Pa at 20 °C.
Executive summary:

The vapour pressure of the test item was determined using the gas saturation method according to OECD Test Guideline 104 (1995). The vapour pressure was determined at 10, 20 and 30 °C. The vapour pressures were less than 9.4 x 10-6 Pa at 9.5 °C, less than 8.8 x 10-6 Pa at 19.6 °C and less than 9.5 x 10-6 Pa at 29.8 °C. The vapour pressure calculated at 20 °C as required by the test guideline was less than 9 x 10-6 Pa.

Description of key information

The vapour pressure of the test item was found to be and 9 x 10-6 Pa at 20 °C.

Key value for chemical safety assessment

Vapour pressure:
0 Pa
at the temperature of:
20 °C

Additional information

The vapour pressure of the test item was determined using the gas saturation method according to OECD Test Guideline 104 (1995). The vapour pressure was determined at 10, 20 and 30 °C. The vapour pressures were less than 9.4 x 10-6 Pa at 9.5 °C, less than 8.8 x 10-6 Pa at 19.6 °C and less than 9.5 x 10-6 Pa at 29.8 °C. The vapour pressure calculated at 20 °C as required by the test guideline was less than 9.0 x 10-6 Pa.


Furthermore, two older studies are available for the determination of the vapour pressure of the test item. In a study according to EPA Guidelines No. 63-9 from 1986, the vapour pressure was determined to be 9.5 x 10-6 Pa at 25 °C by the gas saturation method.


In another study from 1990 according to EPA Guidelines No. 63-9 and OECD Guideline 104 (1981), the vapour pressure was estimated to be less than 1.3 x 10-5 Pa at 25 °C by the gas saturation method.